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The work done by a force on a body moving from (1,4) m to (3,8) m is 44 J. The force can be :

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The work done by a force on a body moving from (1,4) m to (3,8) m is 44 J. The force can be :
A. `8 hat i+6hatj N`
B. `8 hati-8 hatjN`
C. `6 hati-8 hatj N`
D. `6 hati+8 hatj N`
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Correct Answer - D
`W=vec(F).vec(S)`
`44=vec(F)(2hati+4hatj)`
by hit and trial `(6hati+8hatj).(2hati+4hatj)=44 J`
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